Perhaps you should try some spelling variations:
"literature arab _ plan." » "literatura arabe _ plan.", "literature early _ plan.", "literatura para _ plan."
"literatura del del islam." » "literatura de del islam.", "literatura del el islam.", "literatura edel del islam.", "literatura del de islam.", "literatura del dem islam."
"literatura en del islam." » "literatura de del islam.", "literatura espana del islam.", "literatura en el islam."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("literatura en del islam.") or ("literatura del del islam."))) or ("literature arab _ plan."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura en del islam.") OR ("literatura del del islam."))) OR ("literature arab _ plan.")).
• Removing quotes may allow a broader search: (((( literatura en del islam. ) or ( literatura del del islam. ))) or ( literature arab _ plan. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura en del islam.") or ("literatura del del islam."))) or ("literature arab _ plan."))*.